Yes very similar issues with my 94 E320 with an old wiring harness, but other wise top shape. If I hit a bump the cruise control would drop the setting. It then developed issues which a new overvoltage relay cured nicely. You've no doubt read the story on the wiring harness issue and checked to see you have the delphi upgraded engine wiring harness which if not, you will have endless electrical gremilins. Yes fuses as well..all points well taken. The fuses can cause the doors to not unlock and myriad issues where the car just plays dead on you out of the blue! Good luck!

Great cars, Ive got a nicely restored 95 wagon that needs a home, Only a couple states to your West..